nha practice

Question 1

how long should a tech wait after patient has received oral medication to draw for a peak level blood draw

Answer 1

1-2 hours; ensure meds are not a toxic level

Question 2

how big is the needle for donating blood

Answer 2

16-18 gauge

Question 3

when should you replace the sharps container

Answer 3

80% full; 2/3rds full

Question 4

what should you have the patient do when you’re having trouble locating the veins

Answer 4

dangle arm for 1-2 mins

Question 5

what should you do when you find bruising/ sore/ anything that could cause discomfort on the arm where the tourniquet should be?

Answer 5

tourniquet over sleeve; ideally if patient has long sleeves always put tourniquet over sleeves

Question 6

patient procedure of collecting semen specimen

Answer 6

collect in sterile container, keep warm, and deliver token within one hour

Question 7

what actions should you take to locate vein using the warming technique

Answer 7

encase warm towel in plastic bag; to keep patient skin dry and maintain towel temp

Question 8

what tube is used for a PT/PTT test

Answer 8

light blue; sodium citrate; anticoagulant

Question 9

erythrocyte sedimentation rate test is collected in what tube

Answer 9

lavender; hematology

Question 10

when collecting a vancomycin peak level for an inpatient patient, who do talk to about medication schedule

Answer 10

attending nurses;

Question 11

how do you collect a sputum sample

Answer 11

asap in morning; no rinsing mouth, eating or drinking

Question 12

what additive is used to collect blood specimen for CBC

Answer 12

EDTA; lavender tube; hematology

Question 13

why should a tech centrifuge a serum specimen before transport to outside reference lab

Answer 13

cells must be separated from serum

Question 14

thrombin is used to help accelerate clotting for what specimens

Answer 14

serum

Question 15

what tube is used for testing thyroid studies

Answer 15

speckled; tiger top; gold

Question 16

ammonia specimen needs to be immediately placed in

Answer 16

ice water slurry; shows down metabolic process and protects analytes

Question 17

what tube do you collect blood in for determining patients sodium level

Answer 17

green; heparin aids in determining sodium levels

Question 18

what PPE should you use when collecting from a patient with scabies

Answer 18

gown and gloves; contact precautions

Question 19

when collecting for a urine culture, what type of collection is best

Answer 19

clean catch midstream; reduces bacteria for testing

Question 20

what test is affected when using povidone iodine to clean for dermal puncture

Answer 20

potassium; can cause false elevations

Question 21

what tube/ additive do you use when performing chromosome analysis test

Answer 21

heparin; green; anticoagulant producing plasma specimen for chromosome analysis

Question 22

what is included in workflow pathway

Answer 22

entering critical lab data

Question 23

when should you collect blood for a trough level test

Answer 23

15-30 mins before the next medication dose

Question 24

when a patient is brought in unconscious, what type of consent is it

Answer 24

implied consent;

Question 25

how should specimen be shipped in hot weather

Answer 25

in a box with cold packs and biohazard label

Question 26

chemical name for chlorine bleach

Answer 26

sodium hypochlorite

Question 27

when collecting for a blood assay, what tube do you fill up first

Answer 27

yellow- decreases probability of bacterial contamination

Question 28

when using an evacuated tube system

Answer 28

needle 30° angle in direction of vein with bevel up

Question 29

what can cause a grossly hemolyzed specimen

Answer 29

incorrect needle gauge

Question 30

what is a potential consequence of mislabeling a blood bank specimen

Answer 30

transfusion reaction

Question 31

when transporting a semen sample, the sample should be at what temperature

Answer 31

36-38° C (98.6°F)

Question 32

a tech is collecting a unit of blood from a donor. what should the tech tell the donor to do during the procedure

Answer 32

instruct donor to open and close hand gently throughout collection

Question 33

when performing a chromosome analysis test for a patient what additive is needed for the tube

Answer 33

heparin (green)

Question 34

what temperature should blood be stored at

Answer 34

2-8°C (35.6- 46.4° F)

Question 35

what color tune does a lactic acid test belong to

Answer 35

a gray tube top

Question 36

after using syringe method to collect a blood culture from an adult patient, what actions do you take after collecting

Answer 36

withdraw blood into sterile safety syringe

Question 37

what is the normal range for troponin T levels

Answer 37

0-0.2 ng/ml

Question 38

where should you place the blood on a peripheral blood smear

Answer 38

1 mm drop of blood one half inch from edge of slide

Question 39

what additive is needed in tubes when collecting serum

Answer 39

thrombin

Question 40

why is the order of draw different for capillary collections

Answer 40

increased rate of coagulation